TL1 Thermocouple Catalog Page

Mineral Insulated Thermocouples with Lead Wires
(Series TL1)

Ordering Information

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Sheath Diameter
Sheath Material
5 6
Sheath Length
Transition Fitting
Lead Wire Material
Lead Wire Length
Termination Style
Special Features
Attached Fitting
14 15
Insertion Length

2 Calibration
J Type J
K Type K
T Type T
E Type E
W Type J (Special limits)
X Type K (Special limits)
Y Type T (Special limits)
Z Type E (Special limits)

3 Sheath Diameter
A 0.032" (0.8mm)
B 0.040" (1mm)
C 0.059" (1.5mm)
D 0.062" (1.6mm)(1/16")
E 0.079" (2mm)
F 0.092" (2.3mm)
G 0.118" (3mm)
H 0.125" (3.2mm) (1/8")
J 0.156" (4mm)
K 0.177" (4.5mm)
L 0.188" (4.8mm) (3/16") (standard)
M 0.236" (6mm)
N 0.250" (6.4mm) (1/4")
P 0.314" (8mm) (5/16")
Q 0.375" (9.5mm) (3/8")
  Sizes for reference only (Standard tolerances apply)
  For other diameters consult factory

4 Sheath Material
F 304 SS
H 316 SS
N 446 SS
P 310 SS
Q Hastelloy
R Pyrosil D

5 6 Sheath Length

7 Junction
G Grounded (Single)
U Ungrounded (Single)
E Exposed (Single)
R Exposed & recessed (Single)
W Grounded (Dual)
X Ungrounded & isolated (Dual)
Y Ungrounded common (Dual)
Z Expose & isolated (Dual)
  Ungrounded and isolated only available in 0.156" OD & larger

8 Transition Fitting
1 3/8”OD X 1.25” w/ strain relief spring
2 1/4”OD X 1.25” w/ strain relief spring
3 3/16”OD X 1” w/ strain relief spring
4 3/8”OD X 1.25” (no spring)
5 1/4”OD X 1.25” (no spring)
6 3/16”OD X 1” (no spring)
7 7/16”OD X 2” (no spring)
8 3/8”OD X 2” (no spring)
  500°F epoxy standard
  See special features for ceramic potting

9 Lead Wire Material
A Fiberglass (800°F)
B Fluoropolymer (400°F)
C Polyimide (500°F)
D PVC (220°F)
E High temperature fiberglass (1200°F)
F Fiberglass with stainless steel braid (800°F)
G Fluoropolymer with stainless steel braid (400°F)
H Fiberglass with armor cable (800°F)
J Fluoropolymer with armor cable (400°F)
K Polyimide with armor cable (500°F)
L High temperature fiberglass with armor cable (1200°F)
M Fiberglass with stainless steel braid with armor cable (800°F)
W Fluoropolymer with stainless steel braid with armor cable (400°F)
X High temp fiberglass with ss steel braid (1200°F)
  Wire gauge determined by ECS based on sheath diameter

10 Lead Wire Length
  Over 999" contact factory

11 Termination Style
A 2" stripped leads (bare ends)
B 2" stripped leads w/ spade lugs
C Standard male plug (400°F)
D High temp male plug (660°F)
E Max temp male plug (800°F)
F Ceramic male plug (1200°F)
G Solid pin plug
H Standard female jack (400°F)
J Miniature plug (400°F)
K Miniature jack (400°F)
L 2" stripped leads w/ #6 Ring terminals
N Standard 3 pin plug w/ ground wire (400°F)
P Dual molded male plug (400°F)
W 2” stripped leads w/ pin terminals
Q 2” stripped leads w/ wire ferrules


Extra long lead wire length (beyond 2” stripped leads)

12 Special Features
47 Stranded conductor (Lead wire)
04 Flat tip probe
07 Cable Clamp
08 Bx Connector
09 Mating connector
10 Armor cable adapter
11 International IEC 584-3 color coded leads
12 British color coded leads
13 German color coded leads
14 Japanese color coded leads
15 Reverse polarity color coded leads
16 French color coded leads
18 Moisture protection boot on connector
19 High temperature ceramic potting (1200°F)
21 Fluoropolymer coated armor cable (Fluoropolymer)
24 Fluoropolymer covered probe
25 Free spinning fitting (held on probe by a crimp ring)
28 90 degree bend
30 45 degree bend

13 Attached Fitting (optional)
F01 1/8" npt single thread
F02 1/4" npt single thread
F03 3/8" npt single thread
F04 1/2" npt single thread
F05 3/4" npt single thread
F06 1/2" npt x 1/2" npt double thread
F07 1/2" npt double thread. Spring loaded
F08 1/2" npt x 1/2" npt double thread. Spring loaded w/ oil seal
F09 1/2" npt x 3/4" npt double thread
F10 3/4" npt x 3/4" npt double thread
F11 Fixed bayonet cap assembly
F14 1/2" npt x 1" npt double thread
F15 1" npt single thread
F16 Adjustable 7/16" ID bayonet cap fitting (1/8" OD & 3mm OD)
F17 Adjustable 12.5mm ID double slot bayonet cap fitting (1/8" OD & 3mm OD)
F18 1/8" npt compression fitting (Brass)
F19 1/8" npt compression fitting (Stainless Steel)
F20 1/4" npt compression fitting (Brass)
F21 1/4" npt compression fitting (Stainless Steel)
F22 1/2" npt compression fitting (Brass)
F23 1/2" npt compression fitting (Stainless Steel)
F28 1" circular mounting flange
  For other fittings not shown contact factory

14 15 Insertion Length (when required)
  • Solid wire is standard on MGO extension thermocouples
  • For stranded wire see special features